Can cross check the rear end all the way up from the front sub frame 1" holes. That cross check measurement should be within 1/4" or less. Then your rear end will be in line with the whole car, not just the rear sub frame.
More than 1/4" then it's time to adjust that rear axle.
A guy could drill and make an eccentric bushing in that centering hole too. My spring relocate is 3/16 off. Pretty good for just a tape measure I thought.
